Measurement of $${{\mathrm{D}}^0}$$, $${{\mathrm{D}}^+}$$, $${{\mathrm{D}}^{*+}}$$ and $${{\mathrm{D}}^+_{\mathrm{s}}}$$ production in pp collisions at $${\sqrt{{\textit{s}}}~=~5.02~{\text {TeV}}}$$ with ALICE
The measurements of the production of prompt D0, D+, D*+ and D$$^{+}_{s}$$ mesons in proton–proton (pp) collisions at $$\sqrt{s}$$=5.02 TeV with the ALICE detector at the Large Hadron Collider (LHC) are reported. D mesons were reconstructed at mid-rapidity (|y|<0.5) via their hadronic decay channels D0→K-π+, D+→K-π+π+, D*+→D0π+→K-π+π+, D$$^{+}_{s}$$→$$\phi$$π+→K+K-π+, and their charge conjugates. The production cross sections were measured in the transverse momentum interval 0<36 GeV/c for D0, 1<36 GeV/c for D+ and D*+, and in 2<24 GeV/c for D$$^{+}_{s}$$ mesons. Thanks to the higher integrated luminosity, an analysis in finer pT bins with respect to the previous measurements at $$\sqrt{s}$$=7 TeV was performed, allowing for a more detailed description of the cross-section pT shape. The measured pT-differential production cross sections are compared to the results at $$\sqrt{s}$$=7 TeV and to four different perturbative QCD calculations. Its rapidity dependence is also tested combining the ALICE and LHCb measurements in pp collisions at $$\sqrt{s}$$=5.02 TeV. This measurement will allow for a more accurate determination of the nuclear modification factor in p–Pb and Pb–Pb collisions performed at the same nucleon–nucleon centre-of-mass energy.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Contributing Organization:
- ALICE Collaboration
- Grant/Contract Number:
- AC02-05CH11231; AC05-00OR22725
- OSTI ID:
- 1546681
- Alternate ID(s):
- OSTI ID: 1564136
- Journal Information:
- European Physical Journal. C, Particles and Fields, Vol. 79, Issue 5; ISSN 1434-6044
- Publisher:
- SpringerCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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